Illustrated explanation
1Glow-wire / needle-flame testA heated wire and a small flame are different exposures
- Glow-wire / needle-flame testThis term
A hot wire and a small flame impose different controlled exposures. Require the relevant method and response criteria for the material or assembly.
A glow-wire applies a specified hot element to the specimen. A needle-flame test applies a defined small flame; each has its own sequence and ignition or burning criteria.
Conceptual exposure methods without temperatures, flame dimensions, durations or pass criteria. Results from these methods are not interchangeable.